CN205786428U - A kind of titanium oxide type oxygen sensor - Google Patents
A kind of titanium oxide type oxygen sensor Download PDFInfo
- Publication number
- CN205786428U CN205786428U CN201620471012.7U CN201620471012U CN205786428U CN 205786428 U CN205786428 U CN 205786428U CN 201620471012 U CN201620471012 U CN 201620471012U CN 205786428 U CN205786428 U CN 205786428U
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- shell
- oxygen sensor
- titanium oxide
- electricity level
- type oxygen
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The utility model discloses a kind of titanium oxide type oxygen sensor, a kind of titanium oxide type oxygen sensor, including shell, the bottom of shell is provided with waste gas inlet, interior axle electricity level it is provided with in shell, shell and be positioned at the periphery of axle electricity level and be arranged with the outer shaft electricity level of U-shaped, the outer wall of outer shaft electricity level two vertical portion is provided with ceramic sensor element, the top of interior axle electricity level is socketed with compression liner, the top compressing liner is provided with holddown spring, the top of holddown spring is arranged with insulation component, the open top of insulation component is also plugged with holding wire, holding wire passes from the atmospheric air port of housing top end.This utility model sufficiently addresses the problem broken down that heated sensors causes because of emission problem, uses and is not easy accident occur, allows people bring great convenience, and simple in construction of the present utility model, volume are little, low cost.
Description
Technical field
This utility model relates to oxygen sensor technical field, is specially a kind of titanium oxide type oxygen sensor.
Background technology
Using triple mode catalytic converter to reduce on the electromotor of exhaust pollution, oxygen sensor is requisite element.Air-fuel ratio once deviation theory air-fuel ratio due to gaseous mixture, the detergent power of CO, HC and NOx will drastically be declined by three-way catalyst, therefore oxygen sensor is installed in exhaustor, in order to detect the concentration of oxygen in aerofluxus, and send feedback signal to ECU, the increase and decrease of fuel injector distributive value is controlled again by ECU, thus by the air-fuel ration control of gaseous mixture near theoretical value.
Oxygen sensor make use of Nernst principle.Its core parts are the ZrO2 earthenwares of porous, and it is a kind of solid electrolyte, and two sides sinter porous platinum (Pt) electrode respectively.At a certain temperature, owing to both sides oxygen concentration is different, the oxygen molecule of high concentration side (inside earthenware 4) is attracted on platinum electrode combine with electronics (4e) form oxonium ion O2-, make this electrode band positive electricity, O2-ion moves to low oxygen concentration side (exhaust gas side) by the oxygen ion vacancy in electrolyte, make this electrode band negative electricity, i.e. produce electric potential difference.
The great majority that people use at present are all heating type oxygen sensors, although this sensor anti-lead ability is strong, delivery temperature is relied on few, can, EGT low at load relatively low in the case of as usual play a role, but can be because the problem of giving off causes sensor experiences failure, use very inconvenient, and general oxygen sensor structure is complicated, volume is big, cost is high, compares the waste energy.
Utility model content
The purpose of this utility model is to provide a kind of titanium oxide type oxygen sensor, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model following technical scheme of offer: a kind of titanium oxide type oxygen sensor, including shell, the bottom of described shell is provided with waste gas inlet, interior axle electricity level it is provided with in described shell, shell and be positioned at the periphery of axle electricity level and be arranged with the outer shaft electricity level of U-shaped, the outer wall of described outer shaft electricity level two vertical portion is provided with ceramic sensor element, the top of described interior axle electricity level is socketed with compression liner, the top of described compression liner is provided with holddown spring, the top of holddown spring is arranged with insulation component, the open top of insulation component is also plugged with holding wire, described holding wire passes from the atmospheric air port of housing top end.
Preferably, the bottom of shell is provided with protective cover.
Preferably, the outer surface of described shell is provided with a layer insulating.
Preferably, the space of no more than 1 centimetre it is provided with between described interior axle electricity level and outer shaft electricity level.
Preferably, it is provided with drainage screen at described waste gas inlet.
Preferably, described holddown spring is no less than 4.
Preferably, described insulation component is aluminium oxide ring.
Preferably, it is matched in clearance between described holding wire and the atmospheric air port of shell, and distance is less than 0.2 millimeter.
Compared with prior art, the beneficial effects of the utility model are: this utility model sufficiently addresses the problem broken down that heated sensors causes because of emission problem, use and be not easy that accident occurs, people are allowed to bring great convenience, and simple in construction of the present utility model, volume are little, low cost, but when working for 300 DEG C～900 DEG C, resistance value varies with temperature bigger, so precision must be improved by the method for temperature-compensating, the energy can be saved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，A kind of technical scheme of this utility model offer: a kind of titanium oxide type oxygen sensor，Including shell 1，The bottom of shell 1 is provided with waste gas inlet 4，The bottom of shell 1 is provided with protective cover 11，Interior axle electricity level 2 it is provided with in shell 1，In shell and be positioned at the periphery of axle electricity level 2 and be arranged with outer shaft electricity level (3) of U-shaped，The outer wall of outer shaft 3 liang of vertical portions of electricity level is provided with ceramic sensor element 5，The top of interior axle electricity level 2 is socketed with compression liner 6，The top compressing liner 6 is provided with holddown spring 7，The top of holddown spring 7 is arranged with insulation component 8，The open top of insulation component 8 is also plugged with holding wire 10，Holding wire (10) passes from the atmospheric air port 9 on shell 1 top，It it is matched in clearance between holding wire 10 and atmospheric air port 9，And distance is less than 0.2 millimeter，Ensure that holding wire 10 will not loosen.
In order to realize preventing shell 1 from leaking electricity, the outer surface of shell 1 is provided with a layer insulating, increases the safety that this utility model uses.
In order to realize preventing from connecting between interior axle electricity level 2 and outer shaft electricity level 3 electricity, between interior axle electricity level 2 and outer shaft electricity level 3, it is provided with the space of no more than 1 centimetre.
Gas in order to realize preventing waste gas inlet 4 from entering has foreign material, is provided with drainage screen at waste gas inlet 4, and the impurity being so possible to prevent in gas causes damage in entering shell.
Losing efficacy not over the coefficient of stiffiness to realize holddown spring 7, holddown spring 7 is no less than 4.
In order to realize more preferable insulation effect, insulation component 8 is aluminium oxide ring, and aluminium oxide not only has good insulation effect, and the lightest, low cost.
In order to realize preventing holding wire 10 from loosening, the distance between described atmospheric air port 9 and shell 1 is less than 0.2 millimeter, so can guarantee that holding wire 10 will not be the most loosening.
Embodiment the most of the present utility model, for the ordinary skill in the art, being appreciated that in the case of without departing from principle of the present utility model and spirit and these embodiments can carry out multiple change, revise, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (8)
1. a titanium oxide type oxygen sensor, including shell (1), it is characterized in that: the bottom of described shell (1) is provided with waste gas inlet (4), interior axle electricity level (2) it is provided with in described shell (1), shell (1) and be positioned at the periphery of axle electricity level (2) and be arranged with outer shaft electricity level (3) of U-shaped, the outer wall of described outer shaft electricity level (3) two vertical portion is provided with ceramic sensor element (5), the top of described interior axle electricity level (2) is socketed with compression liner (6), the top of described compression liner (6) is provided with holddown spring (7), the top of holddown spring (7) is arranged with insulation component (8), the open top of insulation component (8) is also plugged with holding wire (10), described holding wire (10) passes from the atmospheric air port (9) on shell (1) top.
A kind of titanium oxide type oxygen sensor the most according to claim 1, it is characterised in that: the bottom of described shell (1) is provided with protective cover (11).
A kind of titanium oxide type oxygen sensor the most according to claim 1, it is characterised in that: the outer surface of described shell (1) is provided with a layer insulating.
A kind of titanium oxide type oxygen sensor the most according to claim 1, it is characterised in that: it is provided with the space of no more than 1 centimetre between described interior axle electricity level (2) and outer shaft electricity level (3).
A kind of titanium oxide type oxygen sensor the most according to claim 1, it is characterised in that: described waste gas inlet (4) place is provided with drainage screen.
A kind of titanium oxide type oxygen sensor the most according to claim 1, it is characterised in that: described holddown spring (7) is no less than 4.
A kind of titanium oxide type oxygen sensor the most according to claim 1, it is characterised in that: described insulation component (8) is aluminium oxide ring.
A kind of titanium oxide type oxygen sensor the most according to claim 1, it is characterised in that: it is matched in clearance between the atmospheric air port (9) of described holding wire (10) and shell (1), and distance is less than 0.2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471012.7U CN205786428U (en) | 2016-05-23 | 2016-05-23 | A kind of titanium oxide type oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471012.7U CN205786428U (en) | 2016-05-23 | 2016-05-23 | A kind of titanium oxide type oxygen sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786428U true CN205786428U (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620471012.7U Expired - Fee Related CN205786428U (en) | 2016-05-23 | 2016-05-23 | A kind of titanium oxide type oxygen sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN205786428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751426A (en) * | 2020-05-27 | 2020-10-09 | 蚌埠煜明电子科技有限公司 | Oxygen sensor |
-
2016
- 2016-05-23 CN CN201620471012.7U patent/CN205786428U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751426A (en) * | 2020-05-27 | 2020-10-09 | 蚌埠煜明电子科技有限公司 | Oxygen sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190523 |
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| CF01 | Termination of patent right due to non-payment of annual fee |